Brain abscess after transanal hemorrhoidal dearterialization: a case report.

A relatively new therapy in the treatment of hemorrhoids is transanal hemorrhoidal dearterialization (THD). We report a case of brain abscess caused by Streptococcus milleri following THD. Although a brain abscess after drainage of a perianal abscess has been described in the literature, no report exists of a brain abscess following treatment of hemorrhoids. A healthy 51-year-old man with hemorrhoids underwent THD. Two weeks later he presented with a headache, bradyphrenia, flattened behavior and a left hemiplegia. No perianal complaint and/or perianal abscess was present. A contrast CT scan of the cerebrum showed a right temporoparieto-occipital abscess, with edema and compression of the surrounding tissue and lateral ventricles. MRI showed an abscess with leakage in the right lateral ventricle. Treatment with dexamethasone and intravenous antibiotics was started. Because of progression of symptoms, 3 weeks later ventriculoscopy was performed and the abscess was drained. Culture of the punctuate showed S. milleri. Because of developing hydrocephalus 3 days after ventriculoscopy, first an external ventricle drain and later a ventriculoperitoneal drain was placed. Hereafter the hemiplegia and cognitive disorders improved. This case report describes a severe complication following treatment of hemorrhoids with THD which until now, to our knowledge, has never been described in the literature.